Breather 347

[nards444]

So just got this 347 Foxbody. New build

I don’t think it has a Pcv. Oil is spits out the filler neck. Should I just get a screw in breather and plug the filler neck spicket. Or should i run a tube to somewhere. The eldebrok intake has two plugs underneath that I could use.

 

[General karthief]

First turn your auto correct off or proof read your posts, it makes it hard for a idiot like me to read it,
Then look behind the intake to see if a hose is back there pointing down to a rubber grommet, that should be your pcv valve at the end of that hose and stuck into the grommet. You need to run a hose from the nipple on the filler neck to that capped port on the throttle body.
Disclaimer: Just my observation and not to be confused with any mechanical ability.

 

[nards444]

First turn your auto correct off or proof read your posts, it makes it hard for a idiot like me to read it,
Then look behind the intake to see if a hose is back there pointing down to a rubber grommet, that should be your pcv valve at the end of that hose and stuck into the grommet. You need to run a hose from the nipple on the filler neck to that capped port on the throttle body.
Disclaimer: Just my observation and not to be confused with any mechanical ability.

yeah wow that was bad, dang iphone fixed it.

So went and looked again it doesnt seem to have a PCV valve behind the intake like a stock motor or intake has. Like i said its an eldebrock one. It does have two pluged holes underneath the head part of the intake on the right side.

Back of the intake has one house that runs to the S port on the vacum tree or source

 

[General karthief]

Ok, I looked at the webpage for that intake, I see no provisions of a pcv valve, you need to contact edelbrock about this unless someone here knows more.

 

[nards444]

More I am looking it will need a breather on both valve covers. only thing left to answer is the port on the filler neck plug it or send it to the intake will contract edlebrock.

 

[General karthief]

I think breathers are not the way to go, I would want a pcv valve, but I'm not an expert.

 

[nards444]

I think breathers are not the way to go, I would want a pcv valve, but I'm not an expert.

Me neither but there are different schools of thought. one says pcv valve and no breather. Other says dual breathers and no pcv.

 

[Steel1]

No PCV provisions on a Victor EFI intake, you could remove and drill the lower to accept one.
I run a Victor EFI on my 393w with lines from each valve cover to a catch can, not saying that's the best
way to do it but works for me.

 

[MustangIIMatt]

Amazon product ASIN B005BHXTY6View: https://www.amazon.com/Spectre-Performance-Black-Breather-Filter/dp/B005BHXTY6/ref=mp_s_a_1_4?dchild=1&keywords=spectre+breather+filter&qid=1595243698&sprefix=spectre+breat&sr=8-4


The simplest solution is to put one of those on the oil filler nipple.

 

[General karthief]

But should there be some way to pull the contaminated fumes from inside the engine? I know the efi engine is designed to have a 'closed' intake system partly because of emissions and partly to meter air intake. I would think adding a pcv possibly in a valve cover, then adding a hose from the oil fill tube to the throttle body similar to a stock setup.
The filter on the filler tube will keep crank case pressure from building.

 

[MustangIIMatt]

But should there be some way to pull the contaminated fumes from inside the engine? I know the efi engine is designed to have a 'closed' intake system partly because of emissions and partly to meter air intake. I would think adding a pcv possibly in a valve cover, then adding a hose from the oil fill tube to the throttle body similar to a stock setup.
The filter on the filler tube will keep crank case pressure from building.

Ideally? Yes.

If you want to get complicated and EPA-compliant about it you could run a strainer inline ahead of a Hyundai PCV valve that was factory-mounted inline in a piece of rubber hose and then connect that to a vacuum port or the air intake tube.

Or you can just put a breather filter on the nipple because this engine already isn't EPA-compliant, so what's one more little violation really going to hurt?

 

[General karthief]

EPA compliance sounds complicated.
Just put a n21 mask on that dude and ride.

 

[nards444]

well emailed edelbrock their stance is to put a breather on the valve cover with the filler neck and a pcv on the other valve cover. Still leaves me with the spicket on the filler neck, which Id have to take a look at the valve covers again they are ford racing, the filler neck cover had a baffle in it but not sure if the neck was built into the cover or can be removed, if it can be removed then Ill just run a screw in breather, if not do i plug that spicket or run it to the manifold as well

 

[Steel1]

The filler is pressed and bent into the v/c , can it be removed...yes but it will leave just a non-threaded hole.

 

[nards444]

Also tracked down the builder of the engine. He said just one breather was ok but for street use would probably add a breather on the one side and a pcv to the other valve cover.
Thought of this after but the spicket or barb on the filler neck should run to the throttle body which has a port but is capped.
Should I do as the builder and edelbrock says and run that line from the neck to the TB

issue I think I’m having is the engine was built as a a race engine with bigger ideas down the line so how and what to run might be different then regular use

 

[General karthief]

I would do what the builder and Edelbrock suggest.

 

[Dan02gt]

I looked at a picture of the Victor EFI on Edelbrock’s site and it looks like it has 3 vacuum ports on the back and what could possibly be 2 larger ports underneath. If so could you install a PCV in the driver side valve cover and connect it to a vacuum port on the intake. The connect the filler neck port to the TB like the factory does. I’ve seen it done this way in the past and it worked OK.

 

[7991LXnSHO]

Does it hurt anything or increase oil consumption to have the crank case under vacuum?
In the days of an air breather and carb, one valve cover was usually hooked up by a hose to the air filter housing (with a fiber filter inside), and the other side had the PCV valve with a hose that went to a big port at the base of the carb. So there was a path for fresh air through the enginr for the PCV system.
If there is no filtered air input,!there may be a vacuum in the crank case. Some racers use a pump to do that, but what about on street cars?

 

[General karthief]

What is a 'blimp to fo' ?

 

[7991LXnSHO]

What is a 'blimp to fo' ?

Siri is auto correcting with vigor. I’ll edit it to something more like “use a pump for that” if Siri will let me.